An arrogant student came to the wise old sensei seeking
instruction.
Before the lesson, the sensei poured tea into the student's cup, continuing to
pour until tea was flowing onto the floor. Finally, the student asked why
he continued to pour when the cup was obviously full. The sensei smiled and
said, "you come to me like that cup, full of your own self. When you empty your
cup, come back to me and learn."